Carbureter.



. A. C. BENNETT.

CARBURETER.

APPLICATION FILED FEB-17.1913.

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ASHLEY C. BENNETT, OF MINNEAPOLIS, MINNESOTA.

CARBURETER.

passes from the feed pipe to the carbureter I chamber so that relativelyheavy fuel oil may be so subjected to the action of the air and acomplete vaporization and mixture with the air will be effected beforesuch mixture leaves the carbureter. V The full objects and advantages ofmy invention will appear in connection with the detailed descriptionthereof and are particularly pointed out in the claims. In the drawings,illustrating the application of my invention in one form, Figure 1 is avertical seption taken through the feed pipe of a portion of thecarbureter embodying my improvements. Fig. 2 is a fragmentary partsectional view of a detail. Fig. 3 is an enlarged sectional view similarto Fig. 1 showing a different form of feed pipe. Fig. 4: is an elevationpartly in section of a slightly modified form of my invention. Fig. 5 isa sectional view of an other modification of my invention.

Primarily the invention consists in providing a carbureting chamber 10formed by the carburetor walls 11 into which projects a feed pipe havingconnection with a duct 12 leading to a fuel supply reservoir 13 of wellknown construction, said feed pipe having placed over the same astrainer-like member comprising a series of plates with aperturesbetween the same through which all of the air and all of the fuel mustpass, the fuel reaching said plates with the air from the feed pipe andbeing spread and distributed upon the plates and vaporizing from thesame and from the edges of the plates as "the current of air passesbetween said plates and over said edges. Q

As shown'in Fig. 1, the duct 12 leads to a. feed pipe 14 which is in theform of a nozzle having a single terminal opening 15 controlled by aneedle valve 16, the fuel spraying from such nozzle 15 to be acted uponby the devices of my invention.

Patented Apr. 2? 1915.

Application filed February 17, 1913,. Serial No. 748,834.

As shown in Figs. 3, 4 and 5, a feed pipe 1.7 is employed which is ofuniform cylindrical cross section and may be closed at the top or not asdesired. The cylindrical feed pipe 17 is provided with a series ofapertures 18 which are distributed circumferentially about the feed pipewhile a needle valve 19 extends centrally through the feed pipe 17 andcontrols the opening from the duct 12. The duct 12 terminates at .thecenter of a cup 20 located below the mixing chamber 10 and spacedtherefrom so as to provide a circumferential opening 21 through whichthe air passes to a large central opening 22 leading into thecarbureting chamber 10. Whichever form of feed pipe is employed extendsvertically from the center of the cup 20 and centrally through theopening 22 into the mixing chamber 10 to the required height.

As shown in Figs. 1, 2 and 8, a series of annular plates 23 ofsuccessively diminish- 'ing exterior and interior'diameter are laid oneupon another,-being held slightly spacedthe base plate 26 of thecarbureter and secured at their top to a top plate 27 to which the feedpipe 17 may also be connected if desired. A similar structure isprovided where, as shown in Fig. l, a ribbon of metal 28 is spun or laidin a spiral with the flat sides adjacent but not in contact, being heldpositioned by a cap 27 and rods 25 similar to those shown in Figs. 1 and3. Also, as shown in Fig. 5, a somewhat similar modification of myinvention may be effected by winding a steel ribbon in a plain coil butso that the adjacent members of the coil will be slightly spaced. Such acoil may be used flat above a nozzle spraying device such as 15 or maybepushed up in the center, as indicated in Fig. 5, so as to form aconical'member surrounding a feed pipe such as the feed pipe 17. f Inoperation the'suction of the air draw- 'ing. through aperture 22 andpassing be- ..tween the plates forming the strainer will cause the fueloil to spray out through the nozzle 15 or through the openings 18 in thefeed pipe 17. This spray will be carried I with the air against thesurrounding or overhanging strainer member and will pass between theplates of such member evaporating fromthe surfaces thereof and breakinginto the smallest particles from the outer edges of said plates overwhich the air passes at anangle and at the highest velocity. -Thisaction will result certainly either in vaporizing or in breaking up thefuel into the finest particles and most desirable form of fuelmixture.'- The adjacent plate surfaces, whichever form of my inventionis employed, will always be so close to one another that the fuel oilmust pass between the same in films so that the with these films andparticularly rushing across the edges thereof at the edges of the plateswill have the best opportunity to break up the film of oil intoextremely fine particles. r

I claim:

1. A carbureter comprising a carbureting chamber having a central airadmission opening, an oil'feed trally through said opening and withinthe carbureting chamber, and an evaporator surrounding said. feed pipeand opening through which all air and fuel oil must pass, saidevaporator being built up of a multiplicity of juxtaposed parts havingtheir contiguous surfaces widely extended and held just out of contact.7

2. A carbureter comprising a carbureting chamber having a central airadmission opening, a fuel oil reservoir, and means for conducting oiltherefrom and into the carbureting chamber including a feed pipeextending centrally through said opening, a cup-like member surroundingthe base of the feed pipe and spaced from the said opening, and anevaporator surrounding said feed pipe and opening through which all airand fuel oil must pass, said evaporator beingbuilt up of a multiplicityof juxtaposed parts having their contiguous surfaces widely extended andheld just out of contact.

3. A carbureter comprising a carbureting chamber having a central airadmission air having contact pipe extending cen- 4. Acarburetercomprising a carbureting chamber having a central airadmission opening, an evaporator within the carbureting chambercomprising a hollow member and having the bottom thereof surrounding thesaid opening, the Walls of said member consisting of a series of annularplates laid one upon another, and means for delivering fuel oil withinthe evaporator.

5. A carbureter comprising a carbureting chamber having a central airadmission openlng, an evaporatonwithin the carbureting chambercomprising a hollow member and having the bottoin thereof surroundingthe said opening, the walls of said member consisting of a series ofannular plates laid one upon another, means for holdin the adjacentsurfaces of said plates out 0 contact, and means for delivering fuel oilwithin the evaporator. v

6. A carbureter comprising a carburetingchamber having a central airadmission opening, an evaporator within the carbureting chambercomprising a hollow member andhaving the bottom thereof surrounding thesaid opening, the walls of said' member being slightly spaced consistingof a series of annular plates laid one upon another, said plates havingthe interior and exterior diameters thereof progressively decreasing sothat the complete evaporator structure is conical in form, and

means 'for delivering fuel oil within the evaporator.

In testimony whereof I aflix my signature in presence of two witnesses.

' ASHLEY C. BENNETT.

Witnesses:

H. A. BOWMAN, CHENEVERT.

